View Full Version : RGBHV?
Zeek
1st March 2011, 02:32 AM
My rear-projection accepts a signal called "RGBHV." I want to hook up my computer to the computer via a straight VGA -> Component cable (keeping the native RGB signal). Considering the signal will still be RGB, will that function (without conversion) correctly?
I don't quite understand what RGBHV is, and how it's different from regular RGB. In short, will I have to buy a converter, or can I plug right in with a VGA->RGB adapter?
CoolJosh3k
1st March 2011, 04:17 AM
Despite what it seems, most Screens (such as a Plasma TV) will actually accept RGB. You have to deliver the RGB via a Component cable (minus the sound if it includes the 2 extra Red+White plugs). You may need to adjust a video type setting on some though, as it will not change automatically.
As for RGBHV, it is a like standard RGB, but includes a Horizontal and Vertical signal respectivly. The HV will be either Black+White or Yellow+White You will need a cable for this like: http://www.digitalconnection.com/images/vga_rgbhv_rca.gif
I suggest however, you try either;
a DVI to DVI plus sound (Red+White RCA)
or a HDMI to HDMI
Zeek
1st March 2011, 04:25 AM
I'll have to look at the back of the TV again if it has the B&W or Y&W extra plugs on the back. It's older and doesn't have HDMI or DVI, so those are out of the question. My only hook ups are A/V, S-Video, and Component. I won't be able to get a look at the TV until Friday, but I'll update this then.
However, again, it specifically states that it'll accept YPbPr or RGBHV in the same plug (the only possible resolutions are 480p and 1080i). Since component is the clearest picture I can get, I want to try and work with that instead of getting simple A/V converter cables.
Thanks for the info so far, though.
CoolJosh3k
1st March 2011, 04:52 AM
You mean it will display 1080i, but does not have atleast DVI?!
Something is very wrong here...
Could you post the model number? With the model number I can find out alot about this thing, and even provide better help.
Oz the Gay and Powerful
2nd March 2011, 05:12 PM
Wow big problems
Galactic Mario
2nd March 2011, 05:14 PM
Why don't you just blame Microsoft? That solves everything.
Oz the Gay and Powerful
2nd March 2011, 05:14 PM
Can't let you do that, GM!
BobbyTheCat
2nd March 2011, 07:26 PM
Why don't you just blame Microsoft? That solves everything.
No it doesn't
CoolJosh3k
3rd March 2011, 11:19 AM
Why don't you just blame Microsoft? That solves everything.
Actually, it only ascertains logical reasoning.
Back on topic though, I'd love to have the model number of such a strange TV set.
Zeek
3rd March 2011, 04:53 PM
http://www.amazon.com/Mitsubishi-WS55805-55-16-Projection/dp/B00005O7MA/ref=sr_1_21?s=electronics&ie=UTF8&qid=1299174650&sr=1-21
This is the closest thing I can find to the model TV. I don't know if it's right, but I'll confirm it once I get home on Friday.
Zeek
5th March 2011, 01:15 AM
Alright, my TV is a WS-55809. And, I misread the connection on the back, as it's "GRBHV," which is something I've never heard of until now. Here (https://docs.google.com/viewer?url=http://www.mitsubishi-tv.com/pdf/ownersguides/WS-55819.pdf)'s the manual for the TV.
Any help on what this means exactly will be much appreciated.
EDIT: Going through the input assignment, it seems that I can make the DTV input be RGB. However, I just want to be certain that a straight VGA->RGB connection will work without any dumb hitch.
CoolJosh3k
5th March 2011, 09:33 AM
Proper working link is: http://www.mitsubishi-tv.com/pdf/ownersguides/WS-55819.pdf
As for the TV set; well I'll be darned! It is a Rear-Projection CRT, but a rather more late model that has support for early HDTV.
A rare piece of technology.
To achieve want you want is very specific with this model TV, but can be done.
You PC must support video output of 1920x1080 at 60Hz (60Hz should be the defualt).
You then need a simple VGA to RGB cable and plug it in to the set of 3 sockets labled RGBHV 1080i. You could use a VGA to RGBHV cable too, but the extra HV sockets are optional.
Then make sure your PC is sending the video signal to the TV and that the setting on the PC end are all correct. If problems occur, the something on you PC is not set right, but if only the colours are wrong then you simply change a setting on the TV display menu.
Due to the way this type of TV works though, it may result in a symtom such as http://upload.wikimedia.org/wikipedia/commons/thumb/1/19/Interlaced_video_frame_%28car_wheel%29.jpg/220px-Interlaced_video_frame_%28car_wheel%29.jpg
If you get that interlace problem, you can fix it via video signal timing software on your PC.
Also, lol about the "GRBHV". It is a simple typo they made in thier manual, where the G and R are backwards. It should say "RGBHV".
Hope that helps, let me know if you have any questions or any problems.
Zeek
5th March 2011, 11:53 AM
Looking at my laptop, Window's says the highest I can go is 1366x768. I'm assuming that this only because I'm limited by my own monitor for right now, and, once I get a hook up for the TV, the proper resolution should appear?
What benefits are there, exactly, of having an RGBHV cable over an RGB cable?
CoolJosh3k
6th March 2011, 07:57 PM
What benefits are there, exactly, of having an RGBHV cable over an RGB cable?
It means that instead of the H and V being mixed in with the G, they are carried seperate. This helps keep a more clear analouge signal.
It is a similar thing to Composite vs Component, where in Composite all video signals are in the Yellow colour coded cable, but Component splits it into 3 cables.
So, RGBHV is actually the signal divided up into all 5 parts, and help keep a more clear picture.
Ofcourse most TVs now except digital and no longer have to worry about this.
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